Unloading device for slitter and rewinding machines



P. D. PARSONS UNLOADING DEVICE FOR SLITTER AND REWINING MACHINES Jgly 3,192s.

Filed sept. 4', 1924 Q 7 '4' 23 lne/rior.

Patented July 3, 1928.

UNITED STATE-sI :PATENT oFFioE.

THILI D. PARSONS, #OF PHILADELPHI, PENNSYLVANIA., ASSIGNOR T0 lSCOTTTAPEB GOMPANY, A CORYQRATON F PENNSYLVANIA.

UN LOADIN G DEVICE .FOR SLITTER LND .REWINDING MACHINES.

Applicato'nl-ed ySepinber 4, 15824. Serial No. 735,771.

My invention relates to that class of machines known as sltters andrewinders, wherein a wide roll of paper or cardboard Ais slit intonarrower width, but more par- Vi ticularly to the rewinding elementswhereby the rewound paper or cardboard may be uickly and easily unloadedfrom the winding bars or mandrels.

Heretofore, in machines of this class, it l0 has been customary tofi-ictionally rotate rewinding bars to which the paper or cardboardstrips are clamped, the bars being wholly removable from the slittingmachine with the narrow paper or cardboard rolls attached, thereafterrequiring transfer of the heavy metal bars and the paper or cardboardrolls attached to a convenient place where clamping means are releasedand the Vrolls removed. The bars are then replaced in the slittingmachine for further rewinding operations.

The object of my invention is to eliminate all removable winding barsand to substitute in lieu thereof winding bars forming an attached partof the slitting machine and hinged or adjustably attached in such mannerthat their support and weight is carried by the machine at all times andvfrom which bars the narrow paper or light :cardboard :o rewound rollsmay be readily stripped, the

bars thereafter moved into driving connection with the friction drivemeans and the fresh paper or cardboard strips from the slitting` cuttersclamped to the bars for another rewinding operation.

By my improvements, no winding bars are required to be handled with thepaper or light cardboard rolls and the latter are immediately dislodgedas separate units and handled alone in baskets or otherwise as foundconvenient. In this manner, labor and time are saved and the cost ofslitting and rewinding is materially reduced.

lVith these andv other objects in view, my invention consists ofimprovements applicable to a slitting and rewinding machine and combinedtherewith all as hereinafter fully disclosed and 4more particularlypointed out in the claims.

Referring to the drawings: Fig. 1 `is a side elevation of a slitting andrewinding machine embodying my improvements; Fig. 2 isa rear elevationof the rewindingvand unloading means embodying my invention; Fig. 3 is aplan view of one of the rewinding inandrels in operative position forbeing driyen; Fig. is 'a horizontal sectional view Of the samegFig. 5 isan enlarged view of a portion of Fig. '4; and Fig. 6 is a cross sectionof the mandrel showing how the paper strips are attached for rewinding.

2 is the main frame of the slitting machine and is provided withslitting means which may comprise two shafts with slitting cutting disksspaced along them andA cooperating in pairs or one set of such cutterdisks rolling in contact with the surface of a drum, as commonlyemployed, such slitting means being shown at 3 and 4 and driven by aband. wheel 43 and belt 44. They may be driven in any other mannerdesired. 5 is a stand supported upon the floor tor carrying the windingbar or mandrel upon which the wide paper roll 6 to be slitted is woundand by which it is supported, the web being 4guided over and under dragor tension bars 7 and 9 and passing between guide rods 10 to theslitting cutter means 3 and 4. Thelbarv 9 is axially ad- ]ustable andprovided with frames 8 in which the bar 7 is secured, so that an ad-Justment of the same may be made about the axis of the bar 9 to increaseor decrease the drag or tension on the web for insuring it being undertension while passing through the cutters. The slitted paper provides aplurality of narrow strips 6a and Gb which are respectively guided overrods 11 and 12 and wound upon the separate mandrels 13 and 14so that aseries of narrow rolls spaced apart are formed upon each mandrel (Fig.2). These mandi-els are frictionally driven by a sprocket chain 42 whichreceives its motion from a sprocket wheel 42 and drives the sprocketwheels 38. The forcgoing description of the machine parts relate toconstructions already known in slitting machines and I refer to them forthe purpose of elucidating my improved windingand unloading means now tobe specifically described. As the upper winding mandrel 13 and itsoperative parts are ident-ical with the lower mandrel 14 and itsoperative parts. it will suiiice to describe the details of one/of themand the description may be taken as applyingL to each of them. At oneside of the machine is a fixed frame 151L having upper and lowerbea-rings 17a and 18a respectively for the driving shafts 31, While atthe other side is provided a hinged frame 15 movable about a verticalhinge joint 16 and having upper and lower bearings 17 and 18respectivelyfor the upper and lower mandrels 13 and 14. Referring more particularlyto Fig. 4, the mandrel 14 is cylindrical andl provided longitudinallywith a' slot whose -bottom is inclined, being deepest at its free endand shallowest adjacent to its supported end. This mandrel is looselyjournaled in the bearing 18 and capable of not only being rotated butalso shifted longitudinally, this latter being secured by a pinion 2()on a vertical shaft 21, the teeth 'thereof engaging annular grooves 19about the journal portion ofthe mandrel. As these grooves are each inseparate parallel planes at right angles to the axis of the mandrel,

4the/latter may 'rotate freelywithout changing its position oflongitudinal adjustment provided for by the pinion 20. 'lYhen theVymandrel is-moved to theV right 1n its bearing 18, its free end is movedout of engagement with thedriving head 32 on the driving stub shaft 31 journaled in'iixed bearings This stub shaft S1 is provided with a flangedhub 37 anda sliding` sleeve 39 vkeyed to rotatewith the shaft andcarrying the freely rotatable sprocket wheel 38. Between the sprocketwheel and the flanged hub is an'annular friction disk 40 which isVclamped between said parts under the application of spring pressureyfroma spring 41 pressing upon the vsleeve and adjustable by a nut 41a.This provides a friction drive for the mandrel to compensate for-thevarying diameters of the paper rolls as they are vbeing wound, the drivegiving ra sufficient speed for the smallest diameter of the rolls andpermitting` slipping to compensate for all greater diameters of theroll, the friction always beingsuilicient to insure tight windingagainst the resistance ofthe drag effectof the bars ,7 andv 9, etc.lVhen the mandrel is shifted into engagement with the drivinghead 32, aspace 24 is provided Vin the mandrel 14 is a long clamping bar 28 whichis sufliciently loose to enable it to Lclamp -the endsy of the paperstrips down into the groove orislot 27, as shown in Vlfiglj.V Thisclamping bar is tapered to l correspond to the taper of the slot and forthe purpose of permitting easy withdrawal Vwhen unloading the mandrelsof the wound rolls. The end of the clamping bar 28 is beveled at 30 toprovide an undercut hold on the end of the slot (Fig. 4)k at its shallowend andthe other or larger end of the bar is formed with an enlargedhead having a hole 29 and a recess or notch for engaging a springactuated catch 33 in the end of the driving head 32 and forced intoengaging position by a spring 34 held in position by a plug 35"(Fig. 5).In securing thepaper strip ends to the mandrel, they are laid across itover the slot 27, the bar 28'is then placed upon them forcing them intothe slot, the nose of the bar engages the undercut end of the slot as at30 andthe head end is forced in and engages the spring catch 33 and thusretained. Furthermore, the head end of theclamping bar 28 is received ina `radial slot 32FL in thehead 32 and forms locking engagement therewithby which the mandrel is positively rotated.

Assuming that the narrow paper strips are alternately laid over theupper mandrel 13 and lower mandrel 14 and the said mandrels in windingengagement with Ysocket heads 32 of the winding shafts 31, the clampingbars 28 Vare then inserted into the slots 27, clamping the ends of thepaper strips therein and the head ends ofthe bars are pressed into theslots 32"L until they7V are locked in position by the spring actuatedcatches The machine is then put into slittingY and winding operation andcontinued in operation until the roll of paper 6 has been slit andrewound into a plurality of narrow rolls 6 and 6b on the respectivemandrels, as indi- ,ated by dotted lines in Fig. 2. lVhenthis is done,the ends of the narrowstrips of the respective rolls are each ypasteddown to Vavoid unwinding-during transportation or further handlingpreliminary to use in making other articles.

f To unload the mandrels of the numerous rolls of paperr (or cardboard)thus formed, the following procedure is had: The locking Vdogs 25 arelifted and thrown back and the shaft 21 through a wrench applied to itshead 22 is rotated a Vpartial revolution to correspondingly rotateV thegears 2O and thereby move the mandrels 13 and 14 to the right (Fig. 2)to disengage them andY their clampingbars 28 from the socket heads 32.Theframe 15 with the loaded mandrels is then swung around tothe rear (asindicated 'nient `with the winding socket-'head 32, the paper .ends.clamped to thei'mandrels and slitting` and winding proceeded with asbefore.

It will be seen that the important feature ot the invention resides inhaving the mandrels hinged or otherwise',carriedfby the' machine so.that they Areina-in as part of the machine, yet permit the wound rollsto be removed longitudinally from theirends.

it will now be apparent that I. have devised a novel and usefulconstruction which embodies the-features of advantage enumer- -ated Vasdesirable, and while. I have in the as the saine are susceptible of'modiiication in 'various particulars without departing from the spiritor scope ofthe invention.

Having now described my invention, what l claim as new and desire tosecure by VLetters Patent is 1 l. A. winding and unloading means for aslitting machine, comprising a main traine,

a rotatable winding inandreh a hinged trame in which the mandrel isjournaled and by which it is hingedly connected to the main traine, saidhinge having an upright axis positioned to the rear of .the aXis of themandrel and its bearing whereby one end o't the mandrel may be treed andswung Ytrom winding position to an unloading position while the mandrelis supported by the hinged trame, and operating means cooperating withthe tree end ot the mandrel for rotating it when swung into windingposition.

2. The invention according to claim l, wherein further, the hinged framecarrying the mandrel is hinged to the main frame on a long vertical axislocated at a considerable distance from the axis of the mandrel and inwhich hinged frame the mandrel is wholly supported when swung intounloading position.

3. A winding and unloading means for a slitting machine, comprising amain frame, a rotatable winding mandrel, a frame in which the mandrel isjournaled hinged to the main frame whereby one end of the mandrel maybeswung from winding position to unloading position so that the rolls ofwound material may be withdrawn from one end of the mandrel while theother end is supported by the hinged frame, and operating means forrotating the mandrel when swung into winding position, and whereinfurther, the hinged connection of the mandrel with the main trame of themachine comprises a iti-aine hinged to the main trame on a substantiallyupright. aXis and in which the mandrel is journaled for rotation andwith capacity for longitudinal adjustment 4for insuring drivingengagement with the operating means for rotating t-he mandrel, andwherein also means are provided or moving the mandrel longitudinally inits journal bearing.

t. The invention according to claim 3, and wherein'also the means forproducing the longitudinal adjustment consists of a lgear carried onthe. hinged frame and engaging a plurality .of parallel annular ribs andgrooves on the mandrel, said parts so constructed i that the mandrel mayrotate freely while in adjust-ing engagement with the gear.

Q .A winding and unloading means for a slitting machine, Acomprising amain frame, a rotatable winding mandrel, a frame in which the mandrel isjournaled hinged to the main iframe whereby one end of the inandrel maybe swung from winding position to unloading' position sothat the rollsof wound material may be withdrawn from one end o't the mandrel whilethe other end is supported by the hinged frame, and operating means forrotating the mandrel when swung into winding position, and whereinfurther, the hinged frame on which the inandi'el is ouinaled is hingedto the main frame on a substantially upright aXis and in which frame themandrel is journaled tor rotation with capacity for longitudinaladjust-ment thereon for insuring driving engagement with the operatingmeans for rotating the mandrel, means for moving the mandrellongitudinally, and means are provided for locking the mandrel againstlongitudinal iriovement when in engagement wit-h the operating means.

Gw The invention according to claim 5, wherein also means are providedfor siiiiultaneously clamping the material to the mandrel when lockingthe mandrel in driving engagement with the operating means, said meansincluding a tapered slot on the mandrel and a tapered bar fitting intothe slot and locking means to retain the bar in position during therotation of the mandrel.

7. Iflie invention according to claim 5, and wherein also, the operatingmeans is provided with a rotatable socket head in which the end of themandrel is received, and a clamping bar is detachably arranged in a slotalong the mandrel for clamping the material to be wound to the mandrel,said har also engaging a slot in the socket head and bv which a. drivingconnection is made. u

8. A winding and unloading means for a slitting machine, comprising amain traine, a rotatable winding mandrel, a frame in which the mandrelis journaled hinged to the main traine whereby one end of the mandrelmay be swung from Winding position to unloading position so that therolls of wound material may be withdrawn from i one end yoi the mandrelwhile the other end is supported by the hinged frame, and operfurther;the voperating means is arranged adjacent to the free end of the mandrelwhen in .winding position and having means for [,centrallzing'the freeend ofthe mandrel 'for rotation and Jfor :trictionally driving the saidmandrel.

9. VThe invention according to claim 8, wherein further, means areprovided for causingthe mandrel to be adjusted longitudinally of itsaxis on the hinging means by which it is hinged to the main frame,wherebythe mandrel is moved into and out of locking engagement with theoperating means when in winding position.

10. .A winding and unloading means Jrior a slitting machine consistingof a. frame hinged to the machine on a vertical axis, a mandrel havingone end j ournaled in said hinged frame and with provision forlongitudinal adjustment thereon,v a rotating driving shaft in alinementwith the mandrel when adjusted to winding position and engaging theother end of the mandrel, means for providing a Y relative longitudinaladjustment of the mandrel with respect tothe driving shaft, and engagingmeans for locking the driving shaft and mandrel in driving relationduring winding.

llqThe invention according to claim l0,

wherein further, the mandrel is slotted longitudinally with atapereddepth of slot and a removable tapered clamping bar is fitted toVAwound and also extended into engagement with the drivingshaft wherebyarotary driving connection is made between the shaft vand end or" themandrel most distant from its hinged end.

13; In a winding and unloading means for a slitting machine, thecombination of two winding mandrels, a hinged frame in which the twomandrels are journaled and their weight supported, two frictionallydriven shafts for respectively rotating the mandrels at the same speeds,means for shifting the mandrels longitudinally7 into and out ofoperative engagement with the frictionally driven shafts, and meanscommon to both mandrels for simultaneously operating the means forshifting the mandrels, whereby they are simultaneously moved into andout of' operative engagement with-the frictionally driven shafts.

In testimony of which invention, I hereunto set my hand.

PHILIP D. PARSONS.

